The number 26789
26789 is a composite number with 8 divisors. Its prime factorisation is 7 × 43 × 89. Divisors (8): 1, 7, 43, 89, 301, 623, 3827, 26789.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
26789 has no famous special property in the usual lists (prime, square, cube, triangular, Fibonacci, palindrome, perfect), but it is still a composite number.
- 2
26789 is composite. Its prime factorisation is
- 3
The divisors add up to 31680; without 26789 itself that is 4891, so 26789 is deficient (4891 is less than 26789). Euler's totient φ(26789) = 22176 numbers up to 26789 share no factor with it.
- 4
The digits of 26789 add up to 32, and repeating that until one digit is left gives the digital root 5. The Collatz sequence (halve if even, else 3n+1) takes 95 steps to reach 1.
LaTeX source of the formulas on this page
\[ 26789 = 7 \times 43 \times 89 \]
26789 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 8 |
| Sum of divisors | 31680 |
| Euler totient φ(n) | 22176 |
| Square | 717650521 |
| Cube | 19225139807069 |
| Square root | 163.673455 |
| Digit sum / digital root | 32 / 5 |
| Collatz steps to 1 | 95 |
| Scientific notation | 2.6789 × |
26789 in other forms
| Form | Value |
|---|---|
| In words | twenty-six thousand seven hundred and eighty-nine |
| Binary (base 2) | 110100010100101 |
| Octal (base 8) | 64245 |
| Hexadecimal (base 16) | 68A5 |
| Base 3 | 1100202012 |
| As time | 26789 seconds = 7 h 26 min 29 s |
Is 26789 divisible by 2 to 12?
| Divisor | Answer | Rule |
|---|---|---|
| 2 | No (remainder 1) | A number is divisible by 2 if the last digit is even (0, 2, 4, 6, 8). |
| 3 | No (remainder 2) | A number is divisible by 3 if the digits add up to a multiple of 3. |
| 4 | No (remainder 1) | A number is divisible by 4 if the last two digits make a multiple of 4. |
| 5 | No (remainder 4) | A number is divisible by 5 if the last digit is 0 or 5. |
| 6 | No (remainder 5) | A number is divisible by 6 if it is divisible by both 2 and 3. |
| 7 | Yes (26789 ÷ 7 = 3827) | A number is divisible by 7 if double the last digit and subtract it from the rest: the result is a multiple of 7. |
| 8 | No (remainder 5) | A number is divisible by 8 if the last three digits make a multiple of 8. |
| 9 | No (remainder 5) | A number is divisible by 9 if the digits add up to a multiple of 9. |
| 10 | No (remainder 9) | A number is divisible by 10 if the last digit is 0. |
| 11 | No (remainder 4) | A number is divisible by 11 if the alternating sum of the digits is a multiple of 11. |
| 12 | No (remainder 5) | A number is divisible by 12 if it is divisible by both 3 and 4. |
Questions
Is 26789 a prime number?
No. 26789 = 7 × 43 × 89, so it is divisible by 7.
What are the factors of 26789?
1, 7, 43, 89, 301, 623, 3827, 26789.
What is 26789 in binary?
110100010100101 (hexadecimal 68A5, octal 64245).
What is the square root of 26789?
About 163.6735.
Is 26789 divisible by 3?
No. Its digits add up to 32, which is not a multiple of 3.
What is special about the number 26789?
It is a composite number with 8 divisors.